CalDigit TS4 Thunderbolt Station 4: problems, parts and running costs

Checked: 2026-10-25

Summary

Owners report sleep/wake disconnects that can unmount drives or drop Ethernet and USB, occasional display wake failures, and mixed support experiences. No mandatory annual consumables are identified; replacement parts are a $49.99 230 W power supply and a $29.99 0.8 m Thunderbolt 4 cable. At $300 or less new with a valid warranty it is a good buy for a desk that needs 18 ports; above about $350, compare the CalDigit TS5 at $399.99 or the OWC Thunderbolt 5 Dock at $329.99.

Common problems and fixes

Sleep/wake disconnects (documented by manufacturer) — CalDigit acknowledges affected Apple Silicon/macOS 12 configurations with crashes, unmounted drives, missing Ethernet after wake and occasionally an unresponsive Thunderbolt port; update macOS and Thunderbolt firmware, including the 45.1 release from January 2026, though this does not guarantee zero problems. Warranty coverage is not stated as a free repair for firmware-related behavior. [4][5]
Intermittent USB, audio and backup failures after sleep — a January 2026 MacRumors poster with an M1 Pro reported nearly two years trouble-free, then repeated reconnect failures under macOS Tahoe restored by restarting the Mac; causation was not conclusively diagnosed. No verified failure rate exists. [9]
Missing built-in HDMI — HDMI-only monitors need an active DisplayPort-to-HDMI adapter; passive adapters may fail, adding cost and a compatibility point. [2][6]
Host and USB-C capability limits — base M1 and certain other hosts cannot run two native external displays, and some USB-C-only setups lose 2.5GbE or full bandwidth; verify the exact laptop and monitor models before purchase. [1]
Support and RMA friction (anecdotal) — one December 2024 forum poster said a promised warranty replacement was delayed and messages went unanswered; a CalDigit representative offered to investigate. This is an individual complaint, not proof of systematic denial. [18]

Parts and consumables

230 W power supply (TS4-230W) — $49.99 from CalDigit US Shop, shown out of stock on the checked listing; replace on failure or loss, not on a schedule. Use the supplied or correct compatible adapter. [2][13]
0.8 m Thunderbolt 4 host cable — $29.99 sale price, was $39.99, in CalDigit’s US accessories catalog; replace if lost, damaged or if a longer placement is needed. Certified 40 Gbps Thunderbolt 4 cable recommended. [1][14]
Internal consumables — none identified: no replaceable filter, ink, battery or subscription is documented, and no established lifespan or replacement schedule for internal components. [1][2]

Yearly running cost

Mandatory annual consumables: $0 identified. No fee or service subscription is specified for normal USB/Thunderbolt docking; replacement cables, adapters and an out-of-warranty power supply are contingent costs rather than annual consumables. [1][2][13][14] Electricity cannot be verified from the 230 W nameplate, which is maximum power-supply capacity rather than 24/7 draw; annual cost = measured mean wall watts x hours connected per year / 1000 x local $/kWh, and should be compared against direct laptop charging to isolate the incremental dock cost. No reliable standardized TS4 idle or typical watt measurement was confirmed, so an annual dollar amount would be guesswork. [1][2] If a cable or adapter fails, a verified 0.8 m replacement is $29.99 and an out-of-warranty adapter replacement is listed at $49.99; replacement frequency is unknown. [13][14]

When it is a good buy

Observed US pricing in October 2026: new TS4 at $379.99 on CalDigit’s US store listing (shown out of stock on the checked product page) and $379.99 on B&H’s TS4-US-AMZ listing (in stock in that snapshot); open-box TS4 at $339.99 with a reduced one-year warranty, shown out of stock when checked. [10][11][12] Good buy: $300 or less new with a valid warranty if this exact 18-port arrangement is needed. [1][10][11] Reasonable at $300-$340 if two downstream Thunderbolt 4 ports, extra USB-A, 2.5GbE and both UHS-II readers are mandatory; at $340 open box, compare the warranty reduction with new options. [1][12][15] Above about $350, cross-shop the CalDigit TS5 at a listed $399.99 (15 ports, Thunderbolt 5, 140 W to host) for Thunderbolt 5 laptops, or the OWC Thunderbolt 5 Dock at $329.99 (11 ports, Thunderbolt 5, 140 W). [16][17] TS4 still wins if extra legacy USB and DisplayPort ports are the priority. [1][16] For a basic dual-display desk, the Plugable TBT4-UD5 at $199.95 direct has 13 ports, two integrated HDMI outputs and 96 W certified power, but only gigabit Ethernet and one downstream Thunderbolt 4 port. [15] Alternatives: Plugable TBT4-UD5 for basic dual HDMI; OWC Thunderbolt 5 Dock for Thunderbolt 5 bandwidth and charging; CalDigit TS5 for a Thunderbolt 5 host with fewer old USB-A accessories.